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  • Results are given of geophysical work done during 1952 at the Renison Bell tin field, Tasmania. The area surveyed is to the immediate south-east of those surveyed in 1950 and 1951 and includes the Federal open-cut, Dunn's workings and Stebbin's Hill. Self-potential and magnetic methods, which had proved satisfactory in the previous surveys were again used. Of five main anomalies which were found, three coincide with known workings, namely the Federal open-cut, Dunn's workings and Montana South workings. These anomalies do not indicate any considerable extension of the ore bodies already worked. Of the other two anomalies, one is slightly north-west of Dunn's workings and the other directly on Stebbin's Hill. Three drilling sites are recommended for testing these two anomalies.

  • The Tarcoola Goldfield is one of several districts included in the recently-proposed central Gawler gold province.

  • Legacy product - no abstract available

  • The Tanami region is one of Australia?s premier Proterozoic gold provinces, having already produced ~150 t of gold, and still has high exploration potential. This region contains more than 60 gold occurrences including the Dead Bullock Soak, Groundrush and The Granites gold mines as well as several significant gold prospects (Coyote, Crusade and Kookaburra). The Callie deposit (>5 Moz Au total resource) located in the Dead Bullock Soak goldfield is currently the largest mine in this region. Previous studies of the mineral systems associated with the gold deposits in the Tanami region indicate that they formed over a range of depths and were hosted in both greenstone and sedimentary units. Fluid inclusion studies have shown that the ore-bearing fluids were generally of low to moderate salinity with varying amounts of CO2?N2?CH4. Trapping temperatures ranged from 220 to 430 ?C. In order to determine the extent of these gold mineral systems, we have investigated the chemistry of the fluids in regional quartz veins that outcrop in both the Tanami, Birrindudu and northern Arunta. 40Ar/39Ar dating of veins containing mica was also carried out to determine the timing of the veins with respect to the mineralisation in the Tanami region. Epithermal veins outcrop along the southern margin of the Wiso Basin, the northern Arunta, the western Tanami and in the Birrindudu region. Two populations of fluid inclusions were observed in the epithermal veins: a low salinity fluid (<1 wt. % NaCl eq), and a high salinity fluid (>18 wt. % NaCl eq). No gases were detected in either type of fluid inclusion and both homogenised over the range from 120 to 180 ?C. Regional E-W trending mesothermal quartz veins outcrop in the southern Tanami region and a distinctive zone of ENE trending quartz veins outcrop in the northern Arunta whereas both NW trending and ENE trending veins occur in the Birrindudu region. Two populations of fluid inclusions were also observed in these mesothermal quartz veins. The first contained low salinity fluids with CO2>CH4?(N2?graphite). These inclusions homogenised between 320 and 360 ?C. The second population contained high salinity fluids with no detectable gases and they homogenised between 120 and 230 ?C. 40Ar/39Ar dating of quartz veins containing mica showed a distinct difference in the age of the veins in the Tanami and northern Arunta. Mesothermal veins in the Tanami region had ages ranging from 1700 to 1741 Ma while quartz veins in the northern Arunta gave ages ranging from 1432 to 1518 Ma. This suggests that these vein sets formed from two separate fluid flow events.

  • Package comprises a digital compilation of regional mapping of Bathurst (SI5508) 1:250 000 map by AGSO and NSW Department of Mineral Resources, under NGMA from 1991 to 1996.

  • Diagenetic processes in sedimentary basins are capable of generating a spectrum of closely-related mineral systems such as unconformity-related uranium, Westmoreland-style uranium, sediment-hosted stratiform copper (Kupfersheifer), and stratiform zinc-lead-silver deposits. A close spatial association between uranium and copper deposits has been observed in many regions. Examples include: Rum Jungle uranium field where four deposits (Dyson U, Whites U-Cu-Co-Ni, Intermediate U-Cu and Browns Pb-Zn-Cu-Co-Ni) occur within ~ 2 kms of each other (McCready et al., 2004); Paterson Orogen which contains unconformity-related uranium mineralisation (such as Kintyre) and many copper deposits (such as Nifty) and lead-zinc prospects; Westmoreland uranium field hosting copper and uranium deposits; Athabasca Basin in Canada where both polymetallic and monometallic ores contain anomalous concentrations of base metals (Jefferson et al, 2007). At the other end of the spectrum the Kupfersheifer-style copper system, contain uranium-enriched zones. The richest known uranium deposit of this type is Shinkolobwe (~ 30000 t of U3O8) in the Katanga Province, Zambian Copper Belt.

  • Legacy product - no abstract available

  • The Bulong vermiculite deposit, situated 20 miles east of Kalgoorlie was discussed with members of the West Australian Mines Inspection Branch. The geology, quality, and production potential of the deposit are discussed in this report.

  • This map is produced as part of a series of three maps showing selected mines and mineral deposits and commodities throughout Australia for 2007 on mineral regions.